Home / 78,381,851.20-117,431,059.20-67,044,443.20

Finding the Fourth Proportional to 78,381,851.20, 117,431,059.20 and 67,044,443.20

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Solution

The fourth proportional to 78,381,851.20, 117,431,059.20 and 67,044,443.20 is: 100,445,445.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,381,851.20 : 117,431,059.20 = 67,044,443.20 : x
  2. Step 2: Convert to fraction form
    78,381,851.20/117,431,059.20 = 67,044,443.20/x
  3. Step 3: Cross multiply
    78,381,851.20x = 117,431,059.20 × 67,044,443.20
  4. Step 4: Simplify right side
    78,381,851.20x = 7,873,099,978,450,238
  5. Step 5: Solve for x
    x = 7,873,099,978,450,238/78,381,851.20
  6. Step 6: Final answer
    x = 100,445,445.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.